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3-Pyrazinecarboxamide 1-oxide

Also known as: 4-Oxidopyrazine-2-carboxamide, 2-Pyrazinecarboxamide, 4-oxide, 2-pyrazine carboxamide-4-N oxide, 3-Carbamoylpyrazine 1-oxide, 3-CarbaMoylpyrazine 1-oxide, 3-PYRAZINECARBOXAMIDE 1-OXIDE, 4-oxy-pyrazine-2-carboxylic acid amide, 4-Oxy-pyrazin-2-carbonsaeure-amid, Pyrazinamide Impurity 3, Pyrazinamide-4-N-oxide, pyrazine-2-carboxamide 4-oxide, pyrazine-3-carboxamide 4-oxide

3-Pyrazinecarboxamide 1-oxide (CAS 768-36-5) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C5H5N3O2 and a molecular weight of 139.11200 g/mol. Key properties include a boiling point of 597.5ºC at 760 mmHg, a density of 1.52g/cm3 and a flash point of 315.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
768-36-5
Jingsj CID
J-1429459-8
Molecular Formula
C5H5N3O2
Molecular Weight
139.11200 g/mol
Category
Organic Bases
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point597.5ºC at 760 mmHg
Density1.52g/cm3
Flash Point315.1ºC
Exact Mass139.03800
PSA81.44000
LogP0.30930
Refractive Index1.659

Customs & Trade Information

HS Code2933990090
Summary2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 3-Pyrazinecarboxamide 1-oxide?

The CAS number of 3-Pyrazinecarboxamide 1-oxide is 768-36-5.

What are the molecular formula and molecular weight of 3-Pyrazinecarboxamide 1-oxide?

3-Pyrazinecarboxamide 1-oxide has molecular formula C5H5N3O2 and molecular weight 139.11200 g/mol.

What are the upstream and downstream products of 3-Pyrazinecarboxamide 1-oxide?

For 3-Pyrazinecarboxamide 1-oxide, Upstream Products: Pyrazinamide, 2-Cyanopyrazine; Downstream Products: 6-Chloropyrazine-2-carboxamide, 5-Chloropyrazine-2-carbonitrile, 2-Cyanopyrazine.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "3-Pyrazinecarboxamide 1-oxide (CAS 768-36-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1429459-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.